Afraid of flying? This won’t help: One in five pilots admit to serious errors on the job due to lack of sleep

The people we trust to take us from place to place seriously struggle with sleep, according to a National Sleep Foundation poll. About one-fourth of train operators admit that sleepiness affects their job performance at least once a week, compared to about one in six non-transportation workers. Plus, a significant number of transportation workers say that sleepiness has caused safety problems on the job: Twenty percent of pilots admit they've made a serious error, and one in six train operators and truck drivers say they've had a "near miss" due to sleepiness.

It may not be the most comfortable thing in the world, but a regular Pap smear can improve your chances of surviving cervical cancer, according to new Swedish research that confirms the life-saving benefits of screening every three years. The US Preventive Services Task Force last fall recommended that healthy women ages 21 to 65 undergo a Pap smear every three years. However, more than half of US women who get cervical cancer have never been screened or have been under-screened.

Eating chocolate may lower blood pressure, finds a new study in the American Journal of Clinical Nutrition involving more than 1,000 people. The findings, which combined the results of 42 smaller studies, found that chocolate eaters had a few points knocked off their blood pressure readings, along with lower insulin levels and other benefits. Compounds known as flavonoids, which are also found in foods like nuts, soy, tea, and wine, may be behind the benefit. The caveat: It could take several hundred calories' worth of chocolate to see effects on insulin and blood vessel function, say researchers, and that could mean trouble for your waistline.

There’s a new app in town hoping to raise breast cancer awareness—and some eyebrows, too. The goal of the "Your Man Reminder" app from the Canadian charity Rethink Breast Cancer, is to encourage women to think about their breasts so they'll be more likely to notice any changes. Here’s how it works: You pick a hot—topless, no less—guy, and choose to receive weekly, monthly, or random messages from him reminding you of the TLCs of breast checking: Touch, look, and check. The app currently has more than 70,000 downloads.

The more young children snore, breathe through their mouths, or stop breathing while asleep for a few seconds at a time, the more likely they are to develop behavioral problems, reports a new English study that followed more than 11,000 children. Researchers found that kids with sleep-disordered breathing were 40 to 100 percent more likely to experience problems such as hyperactivity, aggressiveness, anxiety, depression, and difficulty getting along with peers, at age 7 than children without breathing problems. Infancy and young childhood are key periods of brain development, and breathing problems can decrease oxygen to the brain.

Men who cheat are more likely to die during sex, according to a study based on a report by the American Heart Association. While the study found that as a whole, patients could resume sex a week after a mild heart attack, married men having affairs were the exception. Why? Researchers say it could be because they’re often with younger women in unfamiliar settings, which adds extra stress. The number of men who die during sex is small—of the nearly 6,000 cases of sudden death that the researchers looked at, only 0.6 percent happened during sex—but up to 93 percent of those who did die during sex were thought to be engaging in extra-marital sex.